diff --git a/docs/data/data-grid/localization/data.json b/docs/data/data-grid/localization/data.json
index ebda6d194b985..4c3d17272b69b 100644
--- a/docs/data/data-grid/localization/data.json
+++ b/docs/data/data-grid/localization/data.json
@@ -75,7 +75,7 @@
     "languageTag": "nl-NL",
     "importName": "nlNL",
     "localeName": "Dutch",
-    "missingKeysCount": 14,
+    "missingKeysCount": 9,
     "totalKeysCount": 132,
     "githubLink": "https://github.com/mui/mui-x/blob/master/packages/x-data-grid/src/locales/nlNL.ts"
   },
diff --git a/packages/x-data-grid/src/locales/nlNL.ts b/packages/x-data-grid/src/locales/nlNL.ts
index f710c2b2f9975..bd8e8c27ca1ed 100644
--- a/packages/x-data-grid/src/locales/nlNL.ts
+++ b/packages/x-data-grid/src/locales/nlNL.ts
@@ -54,7 +54,7 @@ const nlNLGrid: Partial<GridLocaleText> = {
   columnsManagementNoColumns: 'Geen kolommen',
   columnsManagementShowHideAllText: 'Toon/Verberg Alle',
   columnsManagementReset: 'Reset',
-  // columnsManagementDeleteIconLabel: 'Clear',
+  columnsManagementDeleteIconLabel: 'Verwijderen',
 
   // Filter panel text
   filterPanelAddFilter: 'Filter toevoegen',
@@ -70,9 +70,9 @@ const nlNLGrid: Partial<GridLocaleText> = {
 
   // Filter operators text
   filterOperatorContains: 'bevat',
-  // filterOperatorDoesNotContain: 'does not contain',
+  filterOperatorDoesNotContain: 'bevat niet',
   filterOperatorEquals: 'gelijk aan',
-  // filterOperatorDoesNotEqual: 'does not equal',
+  filterOperatorDoesNotEqual: 'niet gelijk aan',
   filterOperatorStartsWith: 'begint met',
   filterOperatorEndsWith: 'eindigt met',
   filterOperatorIs: 'is',
@@ -93,9 +93,9 @@ const nlNLGrid: Partial<GridLocaleText> = {
 
   // Header filter operators text
   headerFilterOperatorContains: 'Bevat',
-  // headerFilterOperatorDoesNotContain: 'Does not contain',
+  headerFilterOperatorDoesNotContain: 'Bevat niet',
   headerFilterOperatorEquals: 'Gelijk aan',
-  // headerFilterOperatorDoesNotEqual: 'Does not equal',
+  headerFilterOperatorDoesNotEqual: 'Niet gelijk aan',
   headerFilterOperatorStartsWith: 'Begint met',
   headerFilterOperatorEndsWith: 'Eindigt met',
   headerFilterOperatorIs: 'Is',